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The ornamental design for an abdominal exercise device, as shown and described. |
FIG. 1 is a top plan view of the abdominal exercise device according to the present design;
FIG. 2 is a front elevational view of the abdominal exercise device shown in FIG. 1;
FIG. 3 is a side elevational view of the abdominal exercise device shown in FIG. 1;
FIG. 4 is a rear elevational view of the abdominal exercise device shown in FIG. 1;
FIG. 5 is a bottom plan view of the abdominal exercise device shown in FIG. 1; and,
FIG. 6 is a perspective view of the abdominal exercise device shown in FIG. 1.
Diamond, Jr., John P., Zarillo, William A., Offenhauer, Keith L.
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